Is it permissible to say, "This is due to the blessing of so-and-so," when good things increase or something unexpected occurs, or to say, "By Allah, this is a blessed hour in which we saw you"?

Barakah is growth, increase, and the attainment of good. Allah Almighty blesses whomever He wills among His creation and removes it from whomever He wills. Allah has blessed places such as Makkah, Madinah, and Al-Aqsa Mosque; times such as Ramadan and Laylat al-Qadr (the Night of Decree); and things such as milk, dates, and horses. He has also blessed His prophets and the righteous. Associating with and living near righteous people brings barakah and goodness. Indeed, among the blessings of righteousness is that Allah preserves the wealth of orphans and saves villages. The barakah of Prophet Muhammad (peace be upon him) emanates from his very being and what is associated with him. As for the barakah of others among the righteous, it is limited to their righteousness and piety, and it is not permissible to seek blessings from their relics or by rubbing against them. The saying "This is from your blessings" or "Blessings have descended upon us with your arrival" is permissible if the person is worthy of it and has a clear cause in bringing about good. However, applying these phrases to those who have no barakah, such as disbelievers and transgressors, or to those who attribute the fulfillment of needs to the dead, is false and may be among the reprehensible innovations. Lawful barakah is that which is known by sacred law (like the Quran) or by sense (like knowledge), and it is recognized by a person's righteousness and adherence to the Sunnah.